ENTOMOLOGY. 385 



Calco-greeu proved to he uiis^afc on account of the large amount of HoUible arssenic; 

 Gray Arsenoid and White Arsenoid are objected to on the same basis; (ireeu Arsen- 

 oid contains the guaranteed amount of arsenious oxid, but too much of it is sohible; 

 no objections were made to Pink Arsenoid, which was found to be uo more danger- 

 ous to foUage than Paris green. The majority of these substitutes for Paris green are 

 thus condemned. Home-made arsenicals, liowever, especially arsenate of lead, arsen- 

 ite of lead, and the various lime compounds of arsenic are highly reconmiended. 

 Disparene proved to be equally as effective as arsenate of lead, but it was found 

 difhcult to break up the paste and mix it thoroughly with water. 



A table is presented showing the relative power of different arsenicals to remain in 

 suspension. Coarse Paris green was found to remain in suspension for the shortest 

 period, and lead arsenite the longest. Notes are also given on the cost of preparing 

 various forms of arsenical sprays. The author recommends the extensive use of 

 insoluble arsenate of lead, arsenite of lead, and arsenite of calcium. 



Fungicides, insecticides, and spraying calendar, K. E. Rose {M(j. Bill. Flor- 

 ida Dept. Agr., 13 [1903), No. S3, pji. 39-53). — Formulas are presented for the prepara- 

 tion of approved insecticides and fungicides and combinations of these. A spraying 

 calendar is also given, showing the time of application of various remedies for the 

 more common insect and fungus diseases of cultivated plants. 



Silk culture in Manchuria, H. B. Miller ( U. S. Consular Bpts., 73 (1903), No 

 271, pp. 274, 375). — The amount of silk exported from Manchuria is said to be very 

 large, although definite data can not be obtained. The autumn cocoons are kept 

 over winter and silkworms are hatched in April. The worms are allowed to feed on 

 the native scrub oak which is planted on rough hilly ground. The removal of the 

 silk from the cocoon is accomplished by hand work. 



Annual report of the Beekeepers' Association of the Province of Ontario 

 for 1902 {Ann. Rpt. Beekeepers' Assn. Ontario, 1903, pp. 84). — At the 2ord annual 

 meeting of the Ontario Beekeepers' Association, held at Barrie, December 16-18, 

 1902, a number of papers were read, a few of which are briefly mentioned in the fol- 

 lowing notes. J. D. Evans in his presidential address called attention to the impor- 

 tance of the association and the benefits to be derived from a large attendance and 

 active participation in the various discussions. 



J. L. Byer read a paper on market reports, in which attention was called to the 

 necessity of giving close heed to these reports in order to avoid unwise sales as a 

 result of sensational accounts of variations in prices. R. F. Whitesides discussed 

 l)riefly the operations which are necessary in the successful management of bees in 

 spring. 



J. Fixter reported on experiments which were undertaken to determine whether 

 bees injure sound fruit. It was found that under ordinary circumstances they do 

 not. P^xperiments with brood foundation of different sizes indicated that full sheets 

 of foundation should be used, both in sections in the supers and in the frames of 

 the brood chambers. 



F. T. Shutt read a paper on honey from capped and uncapped comb. The author 

 found that honey from uncapped comb shows a somewhat higher moisture content 

 and that the keeping qualities of ripe honey are superior to the immature honey 

 in uncapped comb. 



W. McEvoy discussed a me'thod of treating foul brood. He recommended that 

 the combs be removed in the evening and the bees shaken into their own hives, which 

 should be provided with frames with foundation starters. After four days these 

 frames should be removed and the bees given a fresh set of frames with foundation. 

 It is believed that all infection with foul brood will tluis be eliminated. 



Parthenogenesis in bees, E. PklItger [Arcli. Phi/siol. [PfU'tger], 99 (1903), 

 No. 3-4, pp. 243, i'^-^).— Arguments are presented against the assumption of the pos- 

 sibility of parthenogenesis in bees. The author believes that the cases of apparent 



